Hi Jeroen,
Correction on the asm stuff:
On Thu, 11 Sep 2014 13:17:20 +0200, Jeroen Hofstee jeroen@myspectrum.nl wrote:
clang errors on arch/arm/lib/cache.c:28 for this: asm("0: mrc p15, 0, r15, c7, c10, 3\n\t" "bne 0b\n" : : : "memory"); and that is a clang mistake, as for ARM926EJS r15 is a valid (albeit quite special semantically) Rd for Test and Clean DCache, see page 2-24.
This is the integrated-as complaining (the README tells you to disable it for the moment). The clang folks push UAL hard, up to a point we need to think about minimum gcc version etc. To avoid that, I just left out such changes and just use gas instead, at least for the time being. Below are some changes to compile versatileqemu with llvm integrated-as and gcc/gas. No idea if it actually boots though.
Actually, I had the -no-integrated-as then and have just re-tested now, making sure I have it and get the error above. For some reason, despite the -no-integrated-as option, the internal assembler is invoked.
Amicalement,